Bicycle For Our Minds

I read a study that measured the efficiency of locomotion for various species on the planet. The condor used the least energy to move a kilometer. Humans came in with a rather unimpressive showing about a third of the way down the list. ... then someone at Scientific American had the insight to test the efficiency of locomotion for a man on a bicycle, [who] blew the condor away. That's what a computer is to me... the most remarkable tool that we've ever come up with. It's the equivalent of a bicycle for our minds.

-- Steve Jobs (1955-2011), in a 1990 interview